TMUX7219M: Analog Mux with protection for ADC inputs

Greg Amidon

Part Number: TMUX7219M
Other Parts Discussed in Thread: TMUX7412F, TMUX1072

Team,

My customer is using a differential opamp in order to provide protection to the inputs of an ADC in their C2k micro. Do we have a mux that provide over/under voltage protection for the input of an ADC? I.e. if the input range goes above the VDD it opens the mux switch to protect the output?

Thanks!

Greg

over 2 years ago

0 Nir Gilgur over 2 years ago

TI__Expert 8735 points

Hello Greg,

Yes we do, I recommend the TMUX7412F since it is designed for applications such as yours and has the required Over Voltage Protection feature:

For more information about the device: https://www.ti.com/lit/ds/symlink/tmux7412f.pdf?ts=1658499912634&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTMUX7412F

Please let me know if you have anymore questions or concerns!

Thanks,

Nir

0 Greg Amidon over 2 years ago in reply to Nir Gilgur

TI__Expert 5330 points

Nir,

This is so close! Do we have anything like this that works with a single 5V supply? It looks like this triggers automatically if the input exceeds the supply and unfortunately 8V (or +5/-3) still causes issues to a single ended 5V ADC...

Greg